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On Feb 6, 2008, at 12:48 AM, Mark Andrews wrote:
IPv6 capable nameservers are supposed to use EDNS (see IPv6 node requirements). The roots can be tuned to preference A vs AAAA records. Most/all currently maintained caching servers support EDNS now or the next release will support EDNS.
So would there be benefit in the roots being tuned to only return AAAA if the request is EDNS?
No.
Just out of curiousity that is. --Apple-Mail-32-671463028 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1
<html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; = -webkit-line-break: after-white-space; "> <br><div><div>On Feb 6, 2008, at 12:48 AM, Mark Andrews wrote:</div><br = class=3D"Apple-interchange-newline"><blockquote type=3D"cite"><p = style=3D"margin: 0.0px 0.0px 0.0px 0.0px"><font face=3D"Helvetica" = size=3D"3" style=3D"font: 12.0px Helvetica"><span class=3D"Apple-tab-span"= style=3D"white-space:pre"> </span>IPv6 capable nameservers are = supposed to use EDNS (see IPv6</font></p> <p style=3D"margin: 0.0px = 0.0px 0.0px 0.0px"><font face=3D"Helvetica" size=3D"3" style=3D"font: = 12.0px Helvetica"><span class=3D"Apple-tab-span" = style=3D"white-space:pre"> </span>node requirements).<span = class=3D"Apple-converted-space">=A0 </span>The roots can be tuned to = preference</font></p> <p style=3D"margin: 0.0px 0.0px 0.0px 0.0px"><font = face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px Helvetica"><span = class=3D"Apple-tab-span" style=3D"white-space:pre"> </span>A vs AAAA = records.<span class=3D"Apple-converted-space">=A0 </span>Most/all = currently maintained caching</font></p> <p style=3D"margin: 0.0px 0.0px = 0.0px 0.0px"><font face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px = Helvetica"><span class=3D"Apple-tab-span" style=3D"white-space:pre"> = </span>servers support EDNS now or the next release will = support</font></p> <p style=3D"margin: 0.0px 0.0px 0.0px 0.0px"><font = face=3D"Helvetica" size=3D"3" style=3D"font: 12.0px Helvetica"><span = class=3D"Apple-tab-span" style=3D"white-space:pre"> = </span>EDNS.</font></p> </blockquote></div><br><div>So would there be = benefit in the roots being tuned to only return AAAA if the request is = EDNS?</div><div><br class=3D"webkit-block-placeholder"></div><div>Just = out of curiousity that is.</div></body></html>=
--Apple-Mail-32-671463028-- -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews@isc.org